Ko tenei hua he kaitao polymer pararopi tino whai hua. Mahere Taupānga Ka whakamahia nuitia i roto i te horoi wai, te maimoatanga wai para, te maka tika, te hanga pepa, te umanga rongoa me nga matū o ia ra. Painga 1. Ko tona painga purenga i runga i te pāmahana-iti, te iti-turbidity me te tino parakore-polluted wai mata he tino pai atu i era atu flocculants organic , i tua atu, ka whakahekehia te utu maimoatanga e 20% -80%.